Combination of Bloch Oscillations with a Ramsey-Borde Interferometer: New Determination of the Fine Structure Constant

被引：137

作者：

Cadoret, Malo ^{[1
]}

de Mirandes, Estefania ^{[1
]}

Clade, Pierre ^{[1
]}

Guellati-Khelifa, Saida ^{[2
]}

Schwob, Catherine ^{[1
]}

Nez, Francois ^{[1
]}

Julien, Lucile ^{[1
]}

Biraben, Francois ^{[1
]}

机构：

[1] Univ Paris 06, CNRS, Ecole Normale Super, Lab Kastler Brossel, F-75252 Paris 05, France

[2] Conservatoire Natl Arts & Metiers, F-75141 Paris, France

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 101卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.101.230801

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a new experimental scheme which combines atom interferometry with Bloch oscillations to provide a new measurement of the ratio h/m(Rb). By using Bloch oscillations, we impart to the atoms up to 1600 recoil momenta and thus we improve the accuracy on the recoil velocity measurement. The deduced value of h/m(Rb) leads to a new determination of the fine structure constant alpha(-1)=137.035 999 45 (62) with a relative uncertainty of 4.6x10(-9). The comparison of this result with the value deduced from the measurement of the electron anomaly provides the most stringent test of QED.

引用

页数：4

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